Merge tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu into staging

linux-user pull request 20220928-v2

use 'max' instead of 'qemu32' / 'qemu64'
add  pidfd_open(), pidfd_send_signal() and pidfd_getfd()
Improve madvise(MADV_DONTNEED)
futex syscal rework
strace improvement
HP/PA fixes and improvement
Misc fixes

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# gpg:                using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg:                issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
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* tag 'linux-user-for-7.2-pull-request' of https://gitlab.com/laurent_vivier/qemu: (37 commits)
  linux-user: Add parameters of getrandom() syscall for strace
  linux-user: Lock log around strace
  linux-user: Update print_futex_op
  linux-user: Implement PI futexes
  linux-user: Convert signal number for FUTEX_FD
  linux-user: Implement FUTEX_WAKE_BITSET
  linux-user: Sink call to do_safe_futex
  linux-user: Combine do_futex and do_futex_time64
  linux-user: Set ELF_BASE_PLATFORM for MIPS
  linux-user: Introduce stubs for ELF AT_BASE_PLATFORM
  linux-user/s390x: Save/restore fpc when handling a signal
  linux-user: Don't assume 0 is not a valid host timer_t value
  linux-user: fix bug about missing signum convert of sigqueue
  linux-user/hppa: Fix setup_sigcontext()
  linux-user/hppa: Allow PROT_GROWSUP and PROT_GROWSDOWN in mprotect()
  linux-user/hppa: Increase guest stack size to 80MB for hppa target
  linux-user/hppa: Drop stack guard page on hppa target
  linux-user/hppa: Add signal trampoline for hppa target
  linux-user: Add proper strace format strings for getdents()/getdents64()
  linux-user: Fix TARGET_PROT_SEM for XTENSA
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

1 files changed, 7 insertions, 2 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index e44bdb17b8..88fccfe261 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -124,10 +124,14 @@ static void usage(int exitcode);
 static const char *interp_prefix = CONFIG_QEMU_INTERP_PREFIX;
 const char *qemu_uname_release;
 
+#if !defined(TARGET_DEFAULT_STACK_SIZE)
 /* XXX: on x86 MAP_GROWSDOWN only works if ESP <= address + 32, so
    we allocate a bigger stack. Need a better solution, for example
    by remapping the process stack directly at the right place */
-unsigned long guest_stack_size = 8 * 1024 * 1024UL;
+#define TARGET_DEFAULT_STACK_SIZE	8 * 1024 * 1024UL
+#endif
+
+unsigned long guest_stack_size = TARGET_DEFAULT_STACK_SIZE;
 
 /***********************************************************/
 /* Helper routines for implementing atomic operations.  */
@@ -668,7 +672,8 @@ int main(int argc, char **argv, char **envp)
         struct rlimit lim;
         if (getrlimit(RLIMIT_STACK, &lim) == 0
             && lim.rlim_cur != RLIM_INFINITY
-            && lim.rlim_cur == (target_long)lim.rlim_cur) {
+            && lim.rlim_cur == (target_long)lim.rlim_cur
+            && lim.rlim_cur > guest_stack_size) {
             guest_stack_size = lim.rlim_cur;
         }
     }